Method of treating hydrocarbons derived from gas-tar



UNITED STATES PATENT OF/FICE.

MEILICH MELAMID, OF FREIBURG, GERMANY, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO THE CHEMICAL FOUNDATION, INC., A CORPORATION OF DELAWARE.

1}? 0 Drawing.

I To allwhom it may concern:

products of distillation thereof, are treated with phosphoric acid in afinely comminuted state and under constant agitation, a singularchemical action takes place, i. e., a conversion of the tar, the taroils or the tar derivatives in such a manner that hydrocarbons with highboiling point are converted into hydrocarbons with low boiling point andof a low specific weight. The agi tation of the phosphoric acid in themass can be effected either by mechanical means or by steam which isintroduced during the distilling operation or which develops in the massitself. According to the present method the treatment of thehydrocarbons derived from tar with phosphoric acid takes place alreadyat a low temperature.

The following examples serve to illustrate the variations the methodaccording to the present invention:

Example 1.

100 kg. of a mixture of hydrocarbons dd acid, resulted inz'up to 200boiling 6.49%.

specific weight 0.950, from 200230 boiling 16.53% specific weight 1.001,from 230270 40 boiling 7.76% specific weight 1.005, from 270320 boiling24.16% specific weight 1.005, pitch 44.3%.

Eziaamp-Ze 2.

' If however the same quantity of hydrocarbons derived from tar wasdistilled w1th 25' kg. phosphoric acid under -constant movement and inthe presence of steam, the result was: u to 200 boiling 30.05% specificweight 0.89 from 200-230 boillng' 9.00% specific weight 0.990, from230270 b011- ing 23.14% specific weight 0.992, from 27 0- 320 boiling14.08% pitch 22.05%.

When the oils treated under the stated conditions are treated once morein the same I have discovered that if gas tar, or the METHOD OF TREATINGHYPROCARBONS DERIVED FROM GAS-TAR.

- Specification of Letters Patent. Patented De 14, 192() Applicationfiled August 4, 1914. Serial No. 855,051.

manner, they splitagain and hydrocarbons with still lower specificweight are produced as is shown in the following example:

Example 3.

The distillate boiling up to 200 produced according to Example 2, isagain treated with 25% phosphoric acid under the same conditions asbefore. The result is: up to 120 boiling 80% specific weight 0.860, upto 150 boiling 6% specific weight 0.867, up to 180 boiling 14% specificweight 0.880.

This example shows that all the hydrocarbons derived from tar andboiling up to 200 were converted into hydrocarbons with lower boilingpoint and of lower specific weight.

Example 4.

When the distillate boiling from 200-27 0,

as produced according to Example 2is again mixed with 25 kg. phosphoricacid and distilled according to Example 2, the following surprisingresult is obtained: Below 120 boiling point 20% comes over and it has aspecific gravity of 0.867, between 120 C. and 180 C. boiling point, 25%comes over, which has a specific gravity of 0.884 and between that and230 C. boiling point the remainder equal to comes over and it has aboiling point of 0.965. I Hereby too it is proven, that all oils areconverted into hydrocarbons with lower boiling point and of lowerspecific gravity. When further treated, the hydrocarbons of highspecific gravity will always divide into hydrocarbons with a lowerboiling point and of a lower specific gravity.

From the foregoing it may be seen, that the distillate boiling up to 120does not represent benzol but that it is an entirely novel product.l3enzol of 90, as at present on the market has a specific gravity ornovel product has been used in an automo- 'bile equipped with the usualbenzin gasifier. The motor worked very badly or not at all with thisgasifier, when the above named benzol of 90 was employed, however, withsaid novel roduct, the working of the motor with said enzin gasifier wasperfect and the exhaust gases were nearly odorless as compared to theexhaust gases of the benzin and of the benzol. However, it is still moreinteresting, that the motor with said novel.

product developed a 10% higher velocity 2'. e. efliciency) than with thebest benzin.v

urthermore said novel product proved to be about 12% more eflicient thanbenzin of a specific gravity of 0.720;

What I claim is:

1. A process for converting hydrocarbons of a high boiling pointcontained in tar into hydrocarbons of a lower boiling point by treatingtar containing such hydrocarbons with steam in the presence ofphosphoric acid.

2. A process for converting hydrocarbons of a high boiling pointreceived from tar into hydrocarbons of a lower boiling pointby treatingsuch hydrocarbons with steam in the presence of phosphoric acid.

3. A process for converting hydrocarbons of a high boiling pointcontained in tar into hydrocarbons of a lower boiling point byhydrocarbons.

4. A process for converting hydrocarbons of a high boiling pointreceived from tar into hydrocarbons of a lower boiling point by treatingsuch hydrocarbons with steam in the presence of phosphoric acid and at atemperature suflicient for the distillation of the produced lowerboiling hydrocarbons.

In testimony'whereof I affix my signature in presence of two witnesses.

DR. MEILICH MELAMID. lVitnesses GEORG REUTEBURL, J. R. ZwIoK.

